A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5990-00-288-1820
NSN 5930-01-438-8562
NSN 6110-01-463-2087
NSN 5835-01-091-2553
NSN 5950-00-916-1420
NSN 6685-00-988-7053
NSN 5945-01-508-5024
NSN 5935-01-308-6462
NSN 2925-01-363-5978
NSN 5950-00-907-2440
NSN 5855-01-492-9795
NSN 5895-01-335-8408